* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --bg-color: #0f172a;
    --surface-color: #1e293b;
    --surface-hover: #334155;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --success-color: #22c55e;
    --error-color: #ef4444;
    --user-message-bg: #3b82f6;
    --system-message-bg: #1e293b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 800px;
    height: 90vh;
    display: flex;
    flex-direction: column;
    background-color: var(--surface-color);
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

header .subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message {
    display: flex;
    flex-direction: column;
    max-width: 85%;
}

.message.user {
    align-self: flex-end;
}

.message.system,
.message.assistant {
    align-self: flex-start;
}

.message-content {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.9375rem;
    line-height: 1.5;
}

.message.user .message-content {
    background-color: var(--user-message-bg);
    border-bottom-right-radius: 4px;
}

.message.system .message-content,
.message.assistant .message-content {
    background-color: var(--system-message-bg);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
}

.message-content ul {
    margin-top: 8px;
    margin-left: 20px;
}

.message-content li {
    margin-bottom: 4px;
    color: var(--text-muted);
}

.message-content code {
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    font-size: 0.875rem;
}

.intent-result {
    margin-top: 12px;
    padding: 12px;
    background-color: var(--bg-color);
    border-radius: 8px;
    overflow-x: auto;
}

.intent-result pre {
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    font-size: 0.8125rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

.intent-item {
    padding: 8px 12px;
    margin-bottom: 8px;
    background-color: rgba(99, 102, 241, 0.1);
    border-left: 3px solid var(--primary-color);
    border-radius: 0 6px 6px 0;
}

.intent-item:last-child {
    margin-bottom: 0;
}

.intent-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}

.intent-value {
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--success-color);
}

.intent-value.null {
    color: var(--text-muted);
    font-style: italic;
}

.error-message {
    color: var(--error-color);
    padding: 8px 12px;
    background-color: rgba(239, 68, 68, 0.1);
    border-radius: 6px;
    margin-top: 8px;
}

/* Suggestions Section */
.suggestions-container {
    padding: 16px 20px 20px;
    background: linear-gradient(180deg, var(--bg-color) 0%, rgba(15, 23, 42, 0.8) 100%);
    border-top: 1px solid var(--border-color);
}

.suggestions-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.suggestions-header span {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.refresh-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 8px;
    color: var(--primary-color);
    cursor: pointer;
    transition: all 0.25s ease;
}

.refresh-btn:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary-color);
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.2);
}

.refresh-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.refresh-btn.spinning svg {
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.suggestions-bubbles {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.suggestion-bubble {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-color);
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(30, 41, 59, 0.6) 100%);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.complexity-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    height: 22px;
    padding: 0 6px;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    border-radius: 4px;
    flex-shrink: 0;
    text-transform: uppercase;
}

.suggestion-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Simple complexity - Green theme */
.suggestion-bubble.complexity-simple {
    border-color: rgba(34, 197, 94, 0.4);
}

.suggestion-bubble.complexity-simple .complexity-badge {
    background: rgba(34, 197, 94, 0.25);
    color: #4ade80;
}

.suggestion-bubble.complexity-simple:hover {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.25) 0%, rgba(34, 197, 94, 0.1) 100%);
    border-color: rgba(34, 197, 94, 0.6);
    box-shadow: 0 8px 24px rgba(34, 197, 94, 0.25), 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Medium complexity - Blue/Purple theme */
.suggestion-bubble.complexity-medium {
    border-color: rgba(99, 102, 241, 0.4);
}

.suggestion-bubble.complexity-medium .complexity-badge {
    background: rgba(99, 102, 241, 0.25);
    color: #a5b4fc;
}

.suggestion-bubble.complexity-medium:hover {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.25) 0%, rgba(99, 102, 241, 0.1) 100%);
    border-color: rgba(99, 102, 241, 0.6);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.25), 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Complex complexity - Orange/Amber theme */
.suggestion-bubble.complexity-complex {
    border-color: rgba(251, 146, 60, 0.4);
}

.suggestion-bubble.complexity-complex .complexity-badge {
    background: rgba(251, 146, 60, 0.25);
    color: #fdba74;
}

.suggestion-bubble.complexity-complex:hover {
    background: linear-gradient(135deg, rgba(251, 146, 60, 0.25) 0%, rgba(251, 146, 60, 0.1) 100%);
    border-color: rgba(251, 146, 60, 0.6);
    box-shadow: 0 8px 24px rgba(251, 146, 60, 0.25), 0 4px 12px rgba(0, 0, 0, 0.3);
}

.suggestion-bubble:hover {
    transform: translateY(-2px);
    color: #fff;
}

.suggestion-bubble:active {
    transform: translateY(0);
}

.suggestions-loading {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.8125rem;
    padding: 12px 0;
}

.suggestions-loading::before {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid rgba(99, 102, 241, 0.3);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.suggestions-error {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--error-color);
    font-size: 0.8125rem;
    padding: 12px 0;
}

.suggestions-error::before {
    content: '⚠';
}

.chat-input-form {
    display: flex;
    gap: 12px;
    padding: 20px;
    border-top: 1px solid var(--border-color);
    background-color: var(--surface-color);
}

#message-input {
    flex: 1;
    padding: 12px 16px;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-color);
    color: var(--text-color);
    outline: none;
    transition: border-color 0.2s;
}

#message-input:focus {
    border-color: var(--primary-color);
}

#message-input::placeholder {
    color: var(--text-muted);
}

#send-button {
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 500;
    color: white;
    background-color: var(--primary-color);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
}

#send-button:hover {
    background-color: var(--primary-hover);
}

#send-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.loading {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
}

.loading-dots {
    display: flex;
    gap: 4px;
}

.loading-dots span {
    width: 6px;
    height: 6px;
    background-color: var(--text-muted);
    border-radius: 50%;
    animation: bounce 1.4s ease-in-out infinite both;
}

.loading-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

footer {
    padding: 12px 24px;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
}

/* Scrollbar styling */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-muted);
}